. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 9R rJTRTIS FRUTTS S20 §29 IN GULF-COAST STATEvS 27 show signs of wilting, and the wihing will spread to the other branches. As the disease progresses the leaves often dro]) off, or in some cases the wilting may occur so suddenly that the dry leaves will remain hanging to the twigs. After the top has been injured numerous water sprouts grow out from the trunk and large limbs. These at first appear healthy and seem to promise a new, healthy tree, but after a time they become sickly in appearance and later die. Fig. 18 shows a blight
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 9R rJTRTIS FRUTTS S20 §29 IN GULF-COAST STATEvS 27 show signs of wilting, and the wihing will spread to the other branches. As the disease progresses the leaves often dro]) off, or in some cases the wilting may occur so suddenly that the dry leaves will remain hanging to the twigs. After the top has been injured numerous water sprouts grow out from the trunk and large limbs. These at first appear healthy and seem to promise a new, healthy tree, but after a time they become sickly in appearance and later die. Fig. 18 shows a blighted orange tree. The dead branches and the suckers growing out from the base of the tree are very apparent in the illustration. Trees of any age may be attacked, but as a general thing the trouble appears most commonly in old bearing trees. The disease may fre- quently suddenly at- tack the largest and most productive trees in a grove. Up to the time the trees are at- tacked they a])pear to be healthy. No ex- ternal agent has been found associated with the disease. ^ Trees growing on light ham- mock soil appear to be more susceptible to the disease, although it may appear on trees growing on other soils. In some respects the disease acts somewhat like peach yellows, a disease the cause of which is not yet known. Pruning does not check the progress of the disease. Diseased branches may be removed, only uninfected branches being left, yet the disease will reappear. vSince in most cases of blight the roots appear to be healthy, it was thought that by growing new tops on the blighted trees the disease could be controlled. Much time has been wasted without results. Attempts have been made to move the blighted trees to different soil after the tops were cut back. For 2 to 3 years such trees grew out and gave promise of recovering, but later the top sickened and died. Fig. 19 back as before. The best suggestions that can be made regard- ing the control of this disease is to dig out an
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Keywords: ., bookcentury1900, booksubjectcitrusfruits, booksubjectfruitcultur
